EP0552124A1 - Dispositif de coulée continue entre cylindres d'un produit métallique - Google Patents

Dispositif de coulée continue entre cylindres d'un produit métallique Download PDF

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Publication number
EP0552124A1
EP0552124A1 EP93470002A EP93470002A EP0552124A1 EP 0552124 A1 EP0552124 A1 EP 0552124A1 EP 93470002 A EP93470002 A EP 93470002A EP 93470002 A EP93470002 A EP 93470002A EP 0552124 A1 EP0552124 A1 EP 0552124A1
Authority
EP
European Patent Office
Prior art keywords
cylinders
plates
groove
casting
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93470002A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jacques Barbé
Jean-Luc Jacquot
Laurent Sosin
Jacques Spiquel
Jean-Michel Damasse
Eric Perrin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thyssen Stahl AG
USINOR SA
Original Assignee
Thyssen Stahl AG
USINOR Sacilor SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssen Stahl AG, USINOR Sacilor SA filed Critical Thyssen Stahl AG
Publication of EP0552124A1 publication Critical patent/EP0552124A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
    • B22D11/0668—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for dressing, coating or lubricating

Definitions

  • the invention relates to a device for continuous casting between cylinders of a metallic product. More specifically, the invention relates to means allowing the maintenance and / or lubrication of the side walls of the continuous casting device delimiting the casting space between the cylinders.
  • the liquid metal is poured into a pouring space defined by the portions of the surfaces of the cylinders situated above a plane passing through the parallel axes of these cylinders and by fixed end side walls called small faces bearing on the axial ends of the cylinders.
  • the small faces must be applied against the axial ends of the cylinders, so as to obtain an effective seal to prevent any leakage of molten metal.
  • the metal plates have an edge of circular shape on each of their faces delimiting the large base or the small base of the frustoconical edge of the plate, due to the frustoconical shape of the edge of the plate.
  • the face comprising the edge of greatest radius of curvature delimiting the large base is placed in contact with a cylinder, so as to be superimposed on the edge of the cylinder. In this way, the liquid metal filling the casting space comes into contact, at the level of the small faces, only with the pieces of insulating refractory material interposed between the metal plates.
  • the object of the invention is therefore to propose a device for the continuous casting of a metallic product comprising two counter-rotating cylinders with parallel axes arranged opposite each other with a certain spacing and two fixed lateral walls, or small faces, in abutment on the axial ends of the cylinders, delimiting a casting space between the cylinders and each comprising two plates which are in rubbing contact each with a flat front face of one of the two cylinders at one of the axial ends of the cylinders and a wall complementary inserted between the two plates and between the cylinders, this device making it possible to ensure effective lubrication of the friction surfaces between the small faces and the cylinders and a maintenance of the plates of the small faces in a very precise position relative to the cylinders.
  • the cylinders have on each of their front faces, an annular groove having the axis of the cylinder axis, in an area in contact with one of the plates of a small face, so that the plate and groove cooperate during the rotation of the cylinder, for the maintenance and / or lubrication of the small face.
  • Figure 1 is a partial sectional view through a horizontal plane along 1-1 of Figure 2 of a continuous casting device according to the invention and according to a first embodiment.
  • Figure 2 is a sectional and elevational view along 2-2 of Figure 1.
  • FIG. 3 is a side view of a plate of the continuous casting device along 3 of FIG. 2.
  • Figure 4 is a partial sectional view through a horizontal plane of a continuous casting device according to the invention and according to an alternative embodiment.
  • Figure 5 is a partial sectional view along 5-5 of Figure 6 of a continuous casting device according to the invention and according to a second embodiment.
  • FIG. 6 is a front view of the casting device, along lines 6-6 of FIG. 5.
  • the device has been represented in section by a horizontal plane passing through the axes of the cylinders 1 and 2.
  • cylinders 1 and 2 are rotated in opposite directions and liquid metal is introduced into a casting space 3 delimited by the lateral surfaces of the cylinders arranged opposite and by two lateral walls such as the wall 4, called small faces, which are in abutment on the axial ends of the cylinders 1 and 2.
  • the casting space 3 has a minimum width corresponding to the spacing of the cylinders 1 and 2 and to the thickness of the cast product, in the horizontal plane containing the axes of the cylinders 1 and 2.
  • the cylinders 1 and 2 are internally cooled and ensure the solidification of the liquid metal introduced into the casting space 3, so that solidified metal skins are formed in contact with the surface of the cylinders 1 and 2 which entrain the liquid metal solidified in the direction of the narrower part of the casting space 3, or neck, at which the solidified skins meet.
  • the solidified product is continuously extracted below the cylinders.
  • the small faces such as the face 4 are intended to seal the casting space 3 on its lateral sides, so as to prevent any infiltration of liquid metal.
  • the cylinders 1 and 2 comprise a central metallic core of steel 1a (or 2a) and an external ferrule of copper 1b (or 2b) comprising channels, not shown, in which a liquid such as de water, to ensure the cooling of the corresponding ferrule 1b (or 2b) which comes into contact with the liquid metal introduced into the casting space 3.
  • a liquid such as de water
  • the small faces such as the face 4 have two plates, preferably metallic, 5 and 6 having the shape of annular sectors, as can be seen in FIG. 2.
  • the plates 5 and 6 which are fixed and which come into frictional contact with the external peripheral part of the cylinders comprising the cooled ferrules 1b and 2b could also have the shape of disc portions, as described in patent application 90-11000.
  • the plates 5 and 6 are preferably made of steel but can also be made of other metals or even of non-metallic material. They have an outer edge of frustoconical shape whose largest diameter is equal to the diameter of the cylinders 1 and 2.
  • the edge 7 or 8 of the metal plate 5 or 6 located at the end of the frustoconical edge having the largest diameter is arranged in coincidence with the edge of the corresponding cylinder 1 or 2.
  • the closing of the casting space 3, between the cylinders 1 and 2, is ensured by two pieces of refractory material 9 and 10 which have frustoconical bearing surfaces whose shape corresponds to the shape of the frustoconical edge of the plates 5 and 6, which are attached to each other along a flat face and which are interposed between the metal plates 5 and 6.
  • the refractory pieces 9 and 10 are held inside a housing 12 which allows the small face 4 to bear against the corresponding axial ends of the cylinders 1 and 2.
  • the housing 12 has an external edge directed towards the plates 5 and 6 and separated from these plates by a clearance avoiding any contact between the housing 12 and the plates 5 and 6. There is no direct mechanical connection between the housing 12 and the plates 5 and 6, the small face 4 being kept in contact with the axial ends of the cylinders 1 and 2, by means of helical springs 14 interposed between the interior surface of the housing 12 and pressure plates 15 coming into contact with an external flat surface of the pieces of refractory material 9 and 10.
  • helical springs 16 distributed around the housing 12 and interposed between the housing and support parts 17 in contact with the edge of the refractory parts 9 and 10 allow these parts to be held firmly against each other, according to their bearing faces.
  • the bearing of the refractory pieces 9 and 10 is carried out on the metal plates 5 and 6 and the bearing of the metal plates 5 and 6 on the outer end portions of cylinders 1 and 2.
  • the cylinders 1 and 2 comprise annular grooves 19 and 20 machined inside annular parts 21 and 22 attached to the front faces of the ferrules 1b (or 2b).
  • the grooves 19 and 20 have as their axis the axis of the corresponding cylinder 1 or 2.
  • the metal plates 5 and 6 have on their faces directed towards the corresponding cylinder 1 or 2, a rib in the form of an annular sector 23 or 24 whose width is substantially identical to the width of the groove 19 (or 20), so that the annular rib 23 or 24 penetrates inside the corresponding groove, in the service position of the small face, as shown in FIG. 1.
  • the annular rib 23 of the metal plate 5 has two end parts 23a and 23b whose shape corresponds substantially to the shape of the section of the corresponding groove 19 and an intermediate part 23c having a height less than the height of parts 23a and 23b. Of in this way, a free space is provided, inside the groove 19, between the parts 23a and 23b, when the metal plate 5 is fixed in position against the front end of the cylinder 1.
  • the rib 24 of the metal plate 6 has a profile identical to the profile of the rib 23 of the plate 5; the plate 6 is lubricated by introducing grease between the end parts of the rib.
  • a free space is thus provided at the bottom of the groove 19 or 20 and this free space can be supplied with a lubricant such as oil through a pipe 25 or 26 passing through the support pieces 17 and the metal plates 5 and 6 to open into the free space at the bottom of the groove 19 or 20.
  • a lubricant such as oil
  • annular ribs 23 and 24 introduced into the grooves 19 and 20 make it possible to ensure extremely efficient positioning, centering and holding in position of the plates 5 and 6, during casting, so that the external edge 7 or 8 of plates 5 or 6 is maintained in perfect alignment with the edge of the corresponding cylinder 1 or 2.
  • This arrangement also makes it possible to achieve perfect alignment of the sides of the two cylinders 1 and 2 which may have slight dimensional differences due to the precision of the machining and of the adjustment, during assembly.
  • the metal plates 5 and 6 of the small face 4 keep their initial positioning relative to the cylinders 1 and 2, so that the small face remains perfectly waterproof.
  • the stops 27 and 28 have no role as regards the radial positioning of the metal plates 5 and 6 relative to the cylinders 1 and 2.
  • FIG 4 there is shown an alternative embodiment of a small face 4 'of a continuous casting device between cylinders according to the invention, allowing to accommodate a certain displacement of the cylinders 1' and 2 'l' one compared to the other resulting in a bringing together of their axes.
  • the metal plates 5 ′ and 6 ′ of the small face 4 ′ have, like the plates 5 and 6 of the small face 4 shown in FIG. 1, ribs in the form of portions of rings introduced into grooves machined in the ends fronts of the corresponding cylinders 1 'and 2'.
  • the metal plates 5 ′ and 6 ′ further comprise two frustoconical faces 5 ′ a and 6 ′ a inclined in the direction of the casting space 3 ′ on which bear corresponding frustoconical faces of two pieces of refractory material 9 ′ and 10 '.
  • the pieces 9 ′ and 10 ′ of refractory material are held in abutment against the plates 5 ′ and 6 ′ and brought back against each other by springs.
  • FIGS. 5 and 6 show a second embodiment of a continuous casting device according to the invention making it possible to ensure effective lubrication of the surfaces of the metal plates of the small faces and of the axial ends of the cylinders, during the casting.
  • the continuous casting device generally designated by the reference 30 shown in Figures 5 and 6 comprises two counter-rotating cylinders 31 and 32 arranged with a certain spacing so as to delimit between them a casting space 33 which is closed at its ends by side walls such as 34.
  • the wall 34 is formed by two metal plates 35 and 36 in the form of annular sectors having a frustoconical edge which are pressed against the front faces of the cylinders 31 and 32 and by a piece of refractory material 37 interposed between the metal plates 35 and 36.
  • the metal plates 35 and 36 are in frictional contact with the external part of the cylinders 31 and 32 which rotate in opposite directions.
  • the cylinders 31 and 32 have grooves 39 and 40 of annular shape having as axis the axis of the corresponding cylinder 31 or 32.
  • a lubricant is introduced into the grooves 39 and 40, in the form of a grease filling these grooves or in the form of a liquid stream introduced into the grooves 39 and 40 during casting.
  • the grooves 39 and 40 are machined in a part of the front faces of the cylinders 31 and 32 which is covered by the metal plates 35 and 36.
  • the faces of the metal plates 35 and 36 coming into contact with the front faces of the cylinders 31 and 32 cooperate with the groove 39, during the rotation of the cylinders 31 and 32, to ensure distribution and distribution of lubricant between the metal plate and the cylinder.
  • a low viscosity lubricant for example a liquid lubricant
  • the plates 41 and 42 can be constituted by discs or by rings covering the grooves 39 and 40.
  • the grooves 39 and 40 do not have the function of ensuring the positioning and the maintenance of the metal plates 35 and 36 of the small faces, by cooperation of a annular rib and grooves 39 and 40.
  • the device according to the invention although of a simple structure makes it possible to appreciably improve the conditions of the casting.
  • the wear of the friction parts can be considerably reduced.
  • the invention applies not only to the continuous casting between cylinders of thin metal strips but also to the continuous casting between cylinders of any metallic product.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP93470002A 1992-01-17 1993-01-12 Dispositif de coulée continue entre cylindres d'un produit métallique Withdrawn EP0552124A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200505 1992-01-17
FR9200505A FR2686279A1 (fr) 1992-01-17 1992-01-17 Dispositif de coulee continue entre cylindres d'un produit metallique.

Publications (1)

Publication Number Publication Date
EP0552124A1 true EP0552124A1 (fr) 1993-07-21

Family

ID=9425752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93470002A Withdrawn EP0552124A1 (fr) 1992-01-17 1993-01-12 Dispositif de coulée continue entre cylindres d'un produit métallique

Country Status (3)

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EP (1) EP0552124A1 (enrdf_load_stackoverflow)
DE (1) DE4300972A1 (enrdf_load_stackoverflow)
FR (1) FR2686279A1 (enrdf_load_stackoverflow)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113231610B (zh) * 2021-04-30 2022-09-23 中冶赛迪工程技术股份有限公司 弧形振动薄带连铸方法及薄带连铸连轧生产线

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360635A1 (fr) * 1988-09-14 1990-03-28 Usinor Sacilor Paroi latérale pour une installation de coulée continue entre parois mobiles, installation comportant cette paroi et procédé adapté de coulée continue de produits métalliques minces

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58187246A (ja) * 1982-04-27 1983-11-01 Ishikawajima Harima Heavy Ind Co Ltd 鋼板の連続鋳造装置
JPS60162557A (ja) * 1984-02-03 1985-08-24 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6133736A (ja) * 1984-07-25 1986-02-17 Nippon Steel Corp 双ロ−ル型鋳造圧延機における短辺堰のバツクアツプ装置
JPH01273653A (ja) * 1988-04-27 1989-11-01 Nippon Steel Corp ツインドラム式連続鋳造機の端部潤滑方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360635A1 (fr) * 1988-09-14 1990-03-28 Usinor Sacilor Paroi latérale pour une installation de coulée continue entre parois mobiles, installation comportant cette paroi et procédé adapté de coulée continue de produits métalliques minces

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 189 (M-494)3 Juillet 1986 & JP-A-61 033 736 ( NIPPON STEEL CORP. ) 17 Février 1986 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 42 (M-925)(3985) 25 Janvier 1990 & JP-A-1 273 653 ( NIPPON STEEL CORP. ) 1 Novembre 1989 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 28 (M-274)7 Février 1984 & JP-A-58 187 246 ( ISHIKAWAJIMA HARIMA JUKOGYO KK ) 1 Novembre 1983 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 330 (M-442)(2053) 25 Décembre 1985 & JP-A-60 162 557 ( MITSUBISHI JUKOGYO KK ) 24 Août 1985 *

Also Published As

Publication number Publication date
DE4300972A1 (enrdf_load_stackoverflow) 1993-07-22
FR2686279B1 (enrdf_load_stackoverflow) 1994-04-22
FR2686279A1 (fr) 1993-07-23

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